Comment from Leigh: I'm predicting a win for Franchitti. Power is OK on the ovals, but he hasn't fully adapted to them yet - it could be where his lead in the championship begins to diminish
Comment from RG: Hunter-Reay for the win.
Comment from Joe in Fla: Fingers crossed for Simona, but the ovals have abused her this year. But she's strong and smart...there's a chance for a top 10
The dedicated fans are there, but there's concern about the number of empty seats in the grandstands.
Comment from Jeremy (he might be Australian): I predict a win in the nationwide series in Montreal for Aussie Macros Ambrose, and a win for Aussie Ryan Briscoe in Chicagoland. Aussie Mark Webber will win in Spa to complete the trifecta
Drivers have started their engines. I didn't hear the call, but they clearly did.
A two-seater with ensconced competition winner leads off the pack as they head off on their initial laps.
And they're off!
Hard to tell when the race actually begins. Silly rolling starts.
Briscoe made a great start and leads them through the first few laps.
Accident between Scheckter and maybe Matos?
There's a tyre in the middle of the racing line.
Alex Lloyd looks like he is also involved - but will be able to continue with new tyres.
I just noticed that Will Power fell back to 9th position - a bad start for him.
One of the cars (Matos?) is recovered.
This car (not Matos) was right in the way.
Live from the car, Davey Hamilton reports that the low sun is blinding them into turn 3.
Interview with Tomas Scheckter: "For someone to hit you from behind on one of these big tracks that early on, is uncalled for, but that's what you get with some of these guys."
Track is clear.
Actually, I might have been a bit previous with that green flag because some people were overtaking under yellows.
Tweet from @IndyCarNation: de Silvestro, Lloyd, Tagliani, Wilson, Meira, Hamilton, Fisher, and Duno all pitted during the caution
Scott Dixon apparently had his worst start since 2005 but he is on the move now, determined to make his way through the field. Currently in 7th.
Castroneves has lost a place, down to 4th.
Comment from Steven Roy: Danica is only 4 places behind Sato. Tighten your belts and put your helmet on
Scott Dixon's hard work has all been undone as he has fallen back to 11th.
Sato comes into the pits.
Tweet from @AllenWedge: Marco officially took the lead for a lap, then Briscoe takes it back, now Andretti being pushed by Helio great battle
Hideki Mutoh is up to 14th. Still thinking that's a great name.
The IndyCar ticker tells me Jay Howard made a stop for throttle repair. I don't know who Jay Howard is, but he's now running last.
Briscoe and Andretti are passing each other for the lead. Briscoe right now, but blink and it might have changed.
Dan Wheldon has just passed Andretti - as Marco pits.
I recognise Wheldon's car because he has RED WING MIRRORS. Grr.
Seven cars have pitted. I can't keep up with that kind of madness. Wait a tick.
Carpenter has pitted. He has a gold car. At least four others have pitted as well.
Will Power takes his stop and is off cleanly.
Helio had a slow stop because they had an issue fuelling the car - much longer than they had anticipated.
Briscoe and Andretti are still going at it - normal service resumed, albeit slightly down the order for now.
With pit stop shake-outs, their fight is back for first place.
Alex Lloyd was sixth, slowed right down and looks to be last now. Oops.
The front battle has closed up, and whilst Andretti is still nose to tail of Briscoe, Franchitti has also narrowed the gap.
They have reached a back marker.
Ana Beatriz hit the wall, hence the yellow flags. She's making her way to the pitlane.
In IndyCar, it has had a bit of a promotion and is known as pit road.
Every single car pits bar three.
Hideki Mutoh left his pit box with a tyre missing, and Sato also appears to have issues in the pit lane.
I'd just like it noted that Sarah Fisher is leading. Just cos she didn't pit, whatever.
Comment from Steven Roy: Dario got past Andretti on that stop. How does he gain places every single time?
Takuma Sato is out of the race.
More from Davey Hamilton out on track: "We're just plugging away. The guys gave me a really good car. We're having fun."
We were just about to get green flags again and bam, Tagliani hits the wall.
Tagliani stopped in turn 3, Meira has front wing damage, whilst Mutoh has returned to the pit lane.
Mutoh has exited the car.
Meira has a new wing, and looks set to go out again.
Tagliani is also out of the car.
Interview with Sato: "After the pitstop, I exit the box, unfortunately my teammate came in and hit me. The start was good, but after the restart I had a flat tyre. After the pitstop, it's just unnecessary."
Interview with Tagliani: "I'm proud of the team, they worked hard, then we got hit from behind"
Track is clear.
Comment from Kai: Funny how 1 guy says "I got hit from behind! What's up with that?" Then cut to the guy behind and he's like "I dunno what happened".
Sarah Fisher has lost the lead. Boo.
Dario Franchitti appears to be holding everyone up as he struggles to pass Fisher. Briscoe is pulling away.
Around and behind Sarah, they are three wide. She's doing great, I must say, but I fear it will end in tears.
Dario is now down in 5th, he's lost out bigtime on this restart.
Carpenter and Andretti run three wide with Fisher trying to pass her, and as yet, no one has managed it.
Briscoe is streaking ahead.
Ticker tells me Alex Lloyd is re-entering the race. I bet he couldn't get past Sarah either.
Awww, the dream is over. Sarah is down in 4th, and no doubt gonna fall back more.
Fisher pits, finally.
Fisher's race engineer or, erm, crew chief, or whatever, says they had this strategy planned and they are hoping for another yellow to get them back in the top ten.
Briscoe's lead has completely evaporated and he's now being hunted by both Power and Andretti.
Tweet from @IndyCarNation: Power #12 stalking teammate Briscoe #6 by .0829 sec, but seems comfortable following for now
Briscoe pits, followed by several other cars.
There is always so much smoke in the pitlane. I find it concerning.
Moraes has been "tagged" for speeding in the pit lane. Tag, you're it.
Power's pit stop.
Tweet from @IndyCarNation (as pointed out by Leigh): We have had 9 different leaders in the race so far as a record for the season
Ed Carpenter stalled his car in the pits.
Hunter-Reay is currently running second, chasing Wheldon for the lead. Presumably they did not pit.
Carpenter is taking a drive through, apparently for entering the pit from Turn 4. There's more than one entrance?
Comment from Leigh: you need to join the slow lane in turn 3
Hunter-Reay led for a millisecond, but has now fallen back to 5th. Wheldon leads.
Silvestro has pitted, slow into the pit road, perhaps she has issues?
Three wide for the lead right now.
The ticker tells me: "19 lead changes it he record for the season."
Fisher has just pitted again - this may be her final stop.
Alex Lloyd spun off into the grass.
Ana Beatriz has apparently rejoined the race. I haven't seen her yet though.
Not that I know what her car looks like.
Lots and lots of pit stops. Everyone bar Hamilton, Moraes and Fisher.
People pitting. How is anyone supposed to follow that?
Dario Franchitti made up 8 places in the stop, he is now leading.
Danica is up to 6th at the moment.
Beatriz returned to the pits. I never saw her.
Track is clear.
Commentators just told Davey Hamilton there are 33 laps to go, when in actual fact there are just 23. 22 now. If Hamilton keeps on going after the end, we'll know why.
That, my friends, is FOUR WIDE.
Franchitti is holding his own in the lead.
He did not take on new tyres in his flying pit stop, which allowed him to take the lead, but will he be able to hold it to the end?
Davey Hamilton is stopping. Hopefully he'll get a correct lap update from his crew.
Briscoe ran way up towards the wall, but whatever he was trying to do didn't work, and he's fallen way down the order.
5 laps remaining.
Power has to stop again.
Franchitti is pulling a bit of a lead now, with two laps to go.
Dario Franchitti wins the Peak thing Indy at Chicagoland!
Wheldon closed it right up on that final lap but was pipped across the line by Dario.
Oh, I forgot my chequered flag! 200 laps complete.
The final top ten.
Thanks to everyone for joining me this evening/morning. We'll be back later today with F1 - you know, that thing we're supposed to be covering.
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